ᐅ How can I prevent mold in the attic?

Created on: 2 May 2021 14:22
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Heidi1965
The attic of our new build is accessed by a pull-down ladder. There are no windows there – neither in the gable nor any roof windows.

During the building drying phase (after plastering and after the screed), the hatch to the attic was completely closed. This was explained to us as a way to prevent mold growth. Since then, the pull-down ladder has been installed, and the attic has been lined with drywall panels. Now we notice a musty smell there, and mold spots are forming on the panels.

What can be done at this point? I have also asked the carpenter for advice at the same time.
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Hausbauer2021
26 May 2021 13:49
hm, then it is basically living space. So, it is very expensive storage space :/
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Zaba12
26 May 2021 13:58
Either one or the other! What do you think about using an uninsulated attic as storage space? We made our uninsulated attic accessible, but it’s really not suitable for storing clothes and similar items. It gets unbearably hot in summer and unbearably cold in winter. Besides, there are all kinds of critters that fall down in large numbers when I open the attic hatch once a year to check if everything is okay up there. In my opinion, it’s only suitable as temporary storage for construction materials.
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Hausbauer2021
26 May 2021 17:53
Zaba12 schrieb:

Either one or the other! What do you think about the suitability of the attic as a cold roof for storage? We designed our cold roof to be accessible, but it’s really not suitable for storing clothes and similar items. It gets unbearably hot in summer and freezing cold in winter. Not to mention all the pests that come down in droves whenever I open the attic hatch once a year to check if everything is okay up there. From my point of view, it’s only an emergency storage space for construction materials.

Hmm, that’s unfortunate. That’s exactly where I hoped to create a basement alternative. At least for storing all the Christmas stuff, old books, toys, or whatever is left over. Ideally, I wanted to put cabinets there. But that doesn’t sound very promising. I guess we’ll have to give up on that idea then.
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Nordlys
26 May 2021 21:32
We have an unheated attic, accessible by stairs, insulated with glass wool, featuring a Velux window and a stud frame. It serves as a wonderful basement alternative. Dry, frost-free in winter, and not too hot in summer, making it suitable for storage. Additional cost in 2017 was approximately 15,000 with insulation done as a DIY project.

Dachboden mit Holzrahmenkonstruktion, isolierten Wänden, weiße Matratze auf Stuhl, Taschen, Seile.
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Hausbauer2021
26 May 2021 22:06
Nordlys schrieb:

We have an unheated attic space, but it is accessible by stairs and insulated with glass wool, including a Velux window and a stud frame. It serves as a fantastic basement substitute. Dry, frost-free in winter, and not too hot in summer, so everything can be stored there. Additional cost in 2017 was about 15,000 with insulation done by ourselves.
I think that’s great; that’s what I had in mind except we could do without the fixed stairs. So, it’s possible to do without heating after all. Did I understand correctly that the entire roof is insulated or only the ceiling towards the attic?
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T_im_Norden
27 May 2021 07:24
Nordlys used a construction method with a vapor retarder.